//全屏遮罩显示
function printShadeShow(){
	var allHeight =  document.body.scrollHeight;
	var printShadeDiv = '<div id="printShade" style="position:absolute;z-index:4444;left:0;top:0;height:'+allHeight+'px;width:100%;background-color:black;opacity:0.7"></div>';
	
//	$("body",window.parent.document).append(printShadeDiv);
	$("body").append(printShadeDiv);
	printShade = new Spinner({color:'#fff', lines: 12}).spin($("#printShade")[0]);
}

//全屏遮罩隐藏
function printShadeHide(){
	$("#printShade").remove();
}